expansion - Why does xparse manual talk people into thinking that reliable expandable checking for optional arguments is possible? - TeX - LaTeX Stack Exchange
Xparse | PDF
Xparse | PDF
macros - Can you make boolean expressions in xparse? - TeX - LaTeX Stack Exchange
LaTeX warning: "xparse/redefine-command" -- I don't care :) · Issue #183 · latex3/fontspec · GitHub
latex base - \NewDocumentCommand without xparse - TeX - LaTeX Stack Exchange
xparse documentation: star example has wrong order. · Issue #147 · latex3/latex3 · GitHub
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Xparse Manual | PDF | Parameter (Computer Programming) | Subroutine